Lesson Plan: Front-End Estimation Strategy: Two-Digit Numbers | Nagwa Lesson Plan: Front-End Estimation Strategy: Two-Digit Numbers | Nagwa

# Lesson Plan: Front-End Estimation Strategy: Two-Digit Numbers Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate the sum and difference of two two-digit numbers using the front-end estimation strategy.

#### Objectives

Students will be able to

• identify the digit with the highest place value in a two-digit number,
• round two digits to the highest place value,
• estimate the sum of two-digit numbers by rounding to the highest place value,
• estimate the differences between two-digit numbers by rounding to the highest place value,
• reflect on the accuracy of using the front-end estimation strategy.

#### Prerequisites

Students should already be familiar with

• place values of two-digit numbers,
• multiples of 10,
• addition and subtraction of two-digit numbers.

#### Exclusions

Students will not cover

• three-digit front-end estimation,
• other estimation strategies.